adjective: a higher level of intensity. The ability to be more intense; to have a higher intensity.

more intense than just plain intensity, but slightly less than intensity that is brighter than the sun

staring deeply at a hot girl's bossom

adj: really, really awesome.

Someone who is intense with every thing they do. Many intensers play video games or sports. They will often break tremendous amounts of sweat while engaged in phyiscal activity.

to describe anything done with flair and enthusiasm.

Used as in the immensely cool or out of this world context; often times used to refer to a close encounter or an extreme experience.